Raker gauge



G. A. REINKE.

BAKER GAUGE.

APPLICATION FILED JAN-28. 1922.

Patented Oct. 3, 1922 ll l- 4 INVENTOR. GuSMveARe -e BYQ S ATTORNEY Patented @ct. 3, i922.

tl'tltlli GUSTAVE A. RETNKE, O11" GVIESTWOOD. UALIFORNTA.

BAKER GAUGE.

Application filed January 28, 1922.

T 0 (Mi 10 7mm it may con cern Be it known that l, Gusravn A. Rnrnns,

a citizen of the United States, residing at lVestwood in the county of Lassen, State or Cahforma, have invented certain new and useful Improvements in Baker Gauges; and I do declare the following to be a full, clear, and exact description of the same reiterence being had to the accompanying drawings and to the characters of reference marked thereon, which form a part of this applica tion.

This invention relates to improvements in raker gauges such as are used in saw sharpening operations, and is particularly an improvement over that type of gauge shown in my Patent No. 1376636, dated .irpr. 5th, 1921.

The principal object 01. the present invention is to simplify the mechanism used in making the necessary adjustments, so as to make the device simpler and less expensive of construction than the type shown in the above mentioned patent. while not interfering in the slightest with the efficiency and accuracy of operation of the device.

These objects I accomplish by means such structureand relative arrangement of parts as will appear by aperusal of the following specification and claims.

In the drawings similar characters of reterence indicate corresponding parts in the several views.

Fig. 1 is a longitudinal elevation of one side of the device.

Fig. 2 is a similar view of the reverse side.

Fig. 3 is an enlarged cross section taken on the line of Fig. 2, showing the adjusting mechanism.

Fig. 4 is a detached View of an adjustment plate and connected parts.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes av plate-frame having longitudinal and transverse pairs of plates 2 and 3, each pair being spaced at'the top and bottom of the frame respectively and being to one side of the center of length of the frame.

The upper plates 2 are connected by a bridge a extending upwardly therefrom ant forming a bearing for a threaded stem 5, which above the bridge is provided with is threaded portion 6, which is double the diameter and pitch of the portion 5, but has the threads cut in the same direction.

Serial. No. 532,477.

Above the portion 6 is a finger wheel 7 \aherehy to turn the stem this wheel being adapted to be held at any point by means or a spring clip 8 adapted to engage the knurled edge oi. the wheel.

. The lower end of the stem 5 terminates in a pin 9 s ."l on a lea spring sup ported by the p la tcs 2. Depending from the spring n with the stem 5 a peg ll. which is adapted to project somewhat below the lower tacos oi the plates 2.

The threaded portion 6 is engaged by a block 12 provided with a suhstantiall semicircular tapped portion 12 This block is connected by arms 13 to a transverse plate 14:, positioned above the plates 3 and span ning the space therebetween, said plate 1+1: having a longitudinal slot to receive the teeth 0i. a saw therethrough.

The arm structure 13 and the plate connected thereto are allowed rertical more ment on the frame 1 and are tlcxilalvmounted thereon by means of a flat spring 16 bearing .t the cross bar 13 or" the arms 13, the g being held place and under tension n'lcans or a set screw 17' secured. in the frame 1.

Since the spring 16 is nearer the plate l t than the upper block 153, V for positively holding the tapped block 12 in engagement with the stem 6 is had by means ol another spring 18 hearing against the block, this spring being preferably formed as a part of the spring 8.

Qt course the portion (3 oi the stem could have the same diameter as the portion 5, with double the pitch. but such api' ch would he too great for such small st m, or else the latter would. have to be increased in size also, which would increase the total size and weight of the parts u. ecessarilv.

The functioning and purpose of the device i identical with what was fully set forth in the above :znentioned patent, and need not be repeated in detail. It suiiices to say that the object to be attained is to move the plate id to or from the plates 3 in the same relation and at the same rate of speed as the peg 11 so that when the plate 1 1 abuts against the plates 3, the peg 11 will at that time be in exact alinement with the under faces of the plates 2; and as the plate 14 moves away from the plates 3. the peg 12 will move a corresponding distance below the lower faces oi the plates 2, both movements being had simultaneously by turningadditional means the finger wheel 7 in one direction or the other.

This operation is carried out in the pre ent case as follows: Suppose the wheel "I to be turned to the right, or clockwise, and that the threaded portions and 6 are cut righthand. T he spring 10 will then be depressed, forcing the peg 11 below the lower faces of the plates 2, since the stem 5 will move downwardly in the bridge 4L, which to all intents and purposes is a partof the frame 1, and could in fact be made integral therewith. lit the same time the block 12 and. plate 1% connected thereto is being moved, but this movement takes place in the opposite direction, the extent of such upward movement being equal to the down- Ward movement of the peg 11., by reason of the greater pitch threaded portion 6 on the stem.

This upward movement of the plate equal to the downward movement of the stem and peg, or vice versa, is obtained, will be evident, as long as one threaded portion is of twice as great pi ch as the other and there is no lost motion.

From the foregoing description it will be readily seen that l have produced such a device as substantially fulfills the objects of the invention as set forth herein.

vVhile this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention, what i claim as new and useful. and dc ire to se cure by Letters Patent, is

1. A raker gauge including transverse and spaced each pair of plates being in parallel alinerent, a peg supported between the 'top plates, a plate bridging the space between the lower plates and positioned thereabove and arranged for vertical movement, and single turnable means operating both on the peg and thelast named plate for moving a frame,

top and bottom plates,

them an equal amount in opposite directions.

2. A raker gauge including a frame, transverse and spaced top and bottom plates, each pair of plates being in parallel alinement, a peg supported between the top plates, a plate bridging the space between the lower plates and positioned thereabove and arranged for vertical movement, and a single turnable means operating both on the peg and the last named plate for moving them, but'in opposite directions.

3. it raker gauge including a frame, transverse and spaced top and bottom plates, each pair of plates being in parallel alinement, a peg supported between the top plates, a plate bridging the space between the lower plates and positioned thereabove and arranged for vertical movement, a turnable stem provided with a threaded portion and threaded into the frame and arranged to move the peg when rotated, there being another threaded portion on the stem, a member connected to the last named plate and engaged by the peg move vertically in one direction the last named plate will be moved the same distance but in the opposite direction.

a, A raker gauge including a frame,

transverse and spaced top and bottom plates,

each pair of plates being in parallel alinement, peg supported between the top plates, a plate bridging the space between the lower plates and positioned thereabove and arranged for vertical movement, a turnable stem provided with a threaded portion and threaded into the frame and arranged to move the peg when rotated, there being another threaded portion on the stem, a member connected to the last named plate and engaged by the last named threaded portion, said lastnamed threaded portion having double the pitch of the first named portion and the threads being cut in the same direction. p

In testimony whereof I afiix my signature.

GUSTAVE A. REINKE.

last named threadedv portion, and means whereby as the stem and 

